C Programming MCQ with answers pdf – MCQ on Computer Languages with Answers, Computer Programming Multiple Choice Questions and Answers.
C Programming MCQ with answers
1) A pointer to a pointer is a form of
a) Multiple indirections
b) A chain of pointers
c) Both a and b
d) None of these
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
2) Pointers are of
a) Integer data type
b) Character data type
c) Unsigned integer data types
d) None of these
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
3) Identify the invalid pointer arithmetic
a) Addition of float value to a pointer
b) Comparison of pointers that do not point to the element of the same array
c) Subtracting an integer from a pointer
d) Assigning the value 0 to a pointer variable
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
4) Which is the correct way to declare a pointer?
a) int_ptr;
b) int *ptr;
c) *int ptr;
d) None of these.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
5) If you want to exchange two rows in a two-dimensional array, the fastest way is to:
a) Exchange the elements of the 2rows
b) Exchange the address of each element in the two rows
c) Silence the address of the rows in an array of the pointer and exchange the pointer
d) None of these.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
6) A multidimensional array can be expressed in terms of
a) array of pointers rather than as pointers to a group of a contiguous array
b) array without the group of a contiguous array
c) data type arrays
d) None of these
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
7) Which is the correct way to declare a pointer?
a) int_ptr;
b) int *ptr;
c) *int ptr;
d) None of these.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
8) If you want to exchange two rows in a two-dimensional array, the fastest way is to:
a) Exchange the elements of the 2rows
b) Exchange the address of each element in the two rows
c) Silence the address of the rows in an array of the pointer and exchange the pointer
d) None of these.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
9) Accessing members of a union is via ___ member operator or, for pointers to unions, the ___ operator.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (.(dot), ->)[/expand]
10) Pointer is a variable containing the address of another variable.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: True[/expand]
11) A function can’t return a pointer to the caller.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: False[/expand]
12) Null character is represented by
a) \n
b) \0
c) \o
d) \e
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
13) A Structure
a) can be read as a single entity
b) cannot be read as a single entity
c) can be displayed as a single entity
d) has member variables that cannot be read individually
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
14) We cannot write a function that returns the structure.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: False[/expand]
15) ___ is a data structure whose elements can differ in type.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: Structure[/expand]
16) #include is called ___
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: Preprocessor directive[/expand]
17) malloc() function returns a pointer to integer.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: False[/expand]
18) For deallocating memory, you can use the ___ function.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: free()[/expand]
19) Linked list can be used to implement stacks and queues.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: True[/expand]
20) ___ function is used to alter the size of a block which is previously allocated.
a) alloc()
b) free()
c) realloc()
d) malloc()
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
21) Besides the file pointers which we explicitly open by calling fopen, there are also ___ predefined streams.
a) Two
b) Three
c) One
d) Four
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
22) ___ stores the current file position indicator for stream in the object pointed to by pos.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: fgetpos[/expand]
23) The ___ is a parameter supplied to a program when the program is invoked.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: Command line argument[/expand]
24) The program instructions and global and static variables are stored in a region known as a permanent storage area and the local variables are stored in another area are called ___
a) Stack
b) Linked list
c) Array
d) Structure
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
25) The memory space that is located between these two regions is available for dynamic allocation during the execution of the program. This free memory region is called ____.
a) Heap
b) Array
c) Linked list
d) overflow
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
26) ____ clears the error and EOF indicators for the stream.
a) clearer
b) feof
c) ferror
d) perror
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
27) ____ returns non-zero if the stream’s error indicator is set, Zero otherwise.
a) clearer
b) feof
c) ferror
d) perror
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
28) ___ returns non-zero if the stream’s EOF indicator is set, Zero otherwise.
a) clearer
b) feof
c) ferror
d) perror
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
29) ___ prints a single-line error message on the program’s standard output.
a) clearer
b) feof
c) ferror
d) perror
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
30) Macros and functions are synonyms.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: False[/expand]
31) Nesting of Macro is not allowed.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: False[/expand]
32) ___ is usually used for header files you’ve written.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: “”[/expand]
33) ___ is usually used for which are provided for you.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: <>[/expand]
34) The ___ is a program that processes the source code before it passes through the compiler.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: Preprocessor[/expand]
35) ___ is a process where an identifier in a program is replaced by a predefined text.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: Macro substitution[/expand]
36) ___ is a processor directive used to undefined a macro.
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: #undef[/expand]
37) ADT means
a) Abstract Data Types
b) Application Data type
c) Advance Data Types
d) Array Data Type
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
38) In an ___ expression, a binary operator separates its operands.
a) Postfix
b) Prefix
c) Infix
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
39) In a ___ expression, the operands of an operator precede the operator.
a) Postfix
b) Prefix
c) Infix
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
40) In the following C code
#include <stdio.h>
main()
{
FILE *fp;
fp=fopen (“trial”,”r”);
}
fp points to :
a) The first character in the file
b) A structure that contains a char pointer that points to the first character in the file.
c) The name of the file.
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
41) #define max (x,y) x=(x>y)? x:y is a macro definition, which can find the maximum of two numbers x and y if
a) x and y are both integers
b) x and y are both floats
c) x and y are both double
d) All of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
42) The statement #include <math.h> is written at the top of a program to indicate
a) the beginning of the program
b) the program does the heavy mathematical calculation
c) That certain information about mathematical library functions is to be included at the beginning of the program.
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
43) Consider the following declaration
struct
{
short s[5];
union
{
float y;
long z;
}
u;
}t;
Assume that objects of the type short, float and long occupy 2 bytes, 4 bytes and 8 bytes respectively. the memory equipment for variable t, is
a) 22 bytes
b) 14 bytes
c) 18 bytes
d) 10bytes
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
44) What is the output of the following C program :
main()
{
extern int i;
i=20;
printf(“%d”,sizeof(i));
}
a) 2
b) 4
c) would vary from compiler to complier
d) error, I undefined
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
45) What is the output of the following C program :
main()
{
extern int a;
printf(“%d”,a);
}
int a=20;
}
a) 0
b) 20
c) error
d) garbage value
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
46) What is the output of the following C program :
main()
{
extern int fun(float);
int a;
a=fun(3.14);
printf(“%d”,a);
}
int fun(aa)
float aa;
{
return ((int)aa);
}
a) 3.14
b) 3.0
c) 0
d) Error
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
47) What is the output of the following C program :
main()
{
int a[5]={2,3};
printf(“%d%d%d”,a[2],a[3],a[4]);
}
a) Garbage values
b) 2 3 3
c) 3 2 2
d) 0 0 0
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
48. Which of the following is charecter oriented console I/O function?
a) getchar() and putchar()
b) gets() and puts()
c) scanf() and printf()
d)fgets() and fputs()
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
49. All of the above integer type plus the chair are called the ….. float and double are called the ……
a) Integral types, integral types
b) Float types, integral types
c) Both of the above
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
50. The two user-defined data types are:
a) enumerated, constructor
b) Enumerated, typed
c) Typedet, deconstructor
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
51. What are the legal variable names that can be included in the C program.
a) Printf, x1, gama, scanf
b) Break (), struct, best-yet, result
c) X1, out-file, gamma, x
d) Pow, gets, x.1, result
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
52. The …… variable is not destroyed on exit from the function; instead its value is presented and becomes available again. When the function is next called. These variables are declared as …….
a) extern, localvariable
b) Static, global variable
c) Static, local variable
d) Exten, global variable
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
53. An …… is a collection of variables of the same type. And they are declared like this:
a) Arry, int height (10)
b) Structure, struct height
c) Enumerated, Enum height (2)
d) Classes, class height
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
54. It is divided from a computing language named …… and from an earlier language ……
a) B, BCLP
b) B, PCPL
c) B, BCPL
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (c)[/expand]
55. …… allows the programs to interact with the screen, keyboard and file system of your computer.
a) # include (stdio.h>
b) #include <file.h>
c) #include <conio.h>
d) #include <math.h>
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
56 …… is a library function used in C to display any output to the terminal. The text to be printed is enclosed in ……. quotes.
a) Printf, Single
b) Printf, double
c) Scanf, double
d) none
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
57. Continue statement is used
a) to go to the next iteration in a loop
b) come out of a loop
c) exit and return to the main function
d) restarts iterations from the beginning of the loop
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (a)[/expand]
58. Suppose that i is an integer variable whose value is 7 and f is the floating-point variable whose value is 8.5. Evaluate the following expression : ( i + f)%4
a) 3
b) 3.5
c) 4
d) Invalid
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (d)[/expand]
59. There are two ways to categorize variables: By ____, and by ___
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: data type, storage class[/expand]
60. The string is actually stored as an array of ……. the null character …… is automatically placed at the end of a string to act as a string ……..
a) Constants, \n, terminator
b) Characters, \0, terminator
c) Character, \t, initialize
d) None of the above
[expand title=”Show Answer” swaptitle=”Hide Answer”]Answer: (b)[/expand]
Click here for 100 Multiple Choice Questions in C programming
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